Novel Cations and Molecules from Phosphaalkynes, 1H-Phosphirenes and from Tetraphosphacubane
作者:Kenneth K. Laali、Bernhard Geissler、Andreas Hoffmann、Wolfgang Fiedler、Thomas Mackewitz、Jürgen Simon、Sandro Hollenstein、Manfred Regitz
DOI:10.1080/10426509908546236
日期:1999.1.1
phosphaalkenes without direct observation of a long-lived cation. Reactions of RCP (R = tBu, 1-Ad) with “PhSeF” and with PhSeCl resulted in bis-phenylselenenylation and chlorophenylselenenylation respectively, forming novel Se-containing phosphaalkenes. Ionization of 1-H-triflato-phosphirene with B(OTf) 3 /SO2 led to the direct observation of a persistent phosphirenylium cation. The (CO)5 W-complexed phosphirenylium
通过在超酸性介质中动力学稳定的磷炔的低温质子化,生成和捕获(反离子)膦酰基阳离子(乙烯基阳离子的 P 类似物)导致形成相应的磷烯烃,而无需直接观察长寿命阳离子。RCP (R = tBu, 1-Ad) 与“PhSeF”和 PhSeCl 的反应分别导致双苯基硒基化和氯苯基硒基化,形成新型含硒磷烯烃。用 B(OTf) 3 /SO2 电离 1-H-triflato-phosphirene 导致直接观察到持久性 phosphirenylium 阳离子。随后从 (CO) 5 W 络合的三氟甲磺酸酯和三氟乙酸酯衍生物中生成 (CO) 5 W 络合的磷鎓阳离子。通过与强亲电试剂(即 MeOTf、